speed up hg log --patch
Changing dodiff to read the manifest/changelog for node1 before calling
repo.update allows us to take advantage of the revlog revision cache.
Before this patch and my previous "speed up hg log --debug" patch, when
using hg log -p to display three revisions (A, B and C), dodiff and
repo.changes would end up reading the manifests in this order:
B A B A C B C B
With both patches, this order becomes:
A A B B B B C C
(This considers only dodiff and repo.changes. I'm not sure how other
parts of hg log enter the picture.)
The speed up will depend on the revisions being displayed. (All
"before" times already have my previous "speed up hg log --debug" patch
applied.)
hg repo (tip = 414e81ae971f). hg log -p
before after
real 0m50.981s 0m45.279s
user 0m47.930s 0m42.560s
sys 0m2.526s 0m2.523s
output size: 6917897 bytes
kernel repo (tip = 9d4e135960ed). hg log -p -l64
before after
real 2m14.995s 1m45.025s
user 2m9.509s 1m33.900s
sys 0m3.663s 0m2.942s
output size: 31497621 bytes
same kernel repo. hg log -p -l64 -r c84c2069592f:0
before after
real 1m48.045s 1m0.076s
user 1m44.094s 0m58.492s
sys 0m2.603s 0m1.103s
output size: 197983 bytes
c84c2069592f was the tip of a 10 day old kernel repo that I had lying
around and was where I first tested this patch. For some weird
coincidence it's also a place where the patch makes a huge difference.
rev offset length base linkrev nodeid p1 p2
0 0 3 0 0 362fef284ce2 000000000000 000000000000
1 3 5 1 1 125144f7e028 362fef284ce2 000000000000
2 8 7 2 2 4c982badb186 125144f7e028 000000000000
3 15 9 3 3 19b1fc555737 4c982badb186 000000000000
rev offset length base linkrev nodeid p1 p2
0 0 75 0 7 905359268f77 000000000000 000000000000
rev offset length base linkrev nodeid p1 p2
0 0 75 0 8 905359268f77 000000000000 000000000000
rev offset length base linkrev nodeid p1 p2
0 0 8 0 6 12ab3bcc5ea4 000000000000 000000000000
rev offset length base linkrev nodeid p1 p2
0 0 48 0 0 43eadb1d2d06 000000000000 000000000000
1 48 48 1 1 8b89697eba2c 43eadb1d2d06 000000000000
2 96 48 2 2 626a32663c2f 8b89697eba2c 000000000000
3 144 48 3 3 f54c32f13478 626a32663c2f 000000000000
4 192 58 3 6 de68e904d169 626a32663c2f 000000000000
5 250 68 3 7 3b45cc2ab868 de68e904d169 000000000000
6 318 54 6 8 24d86153a002 f54c32f13478 000000000000
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
4 files, 9 changesets, 7 total revisions
pushing to test-0
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions
pushing to test-1
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 2 changesets, 2 total revisions
pushing to test-2
searching for changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 3 changesets, 3 total revisions
pushing to test-3
searching for changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 4 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 4 changesets, 4 total revisions
pushing to test-4
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 2 changesets, 2 total revisions
pushing to test-5
searching for changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 3 changesets, 3 total revisions
pushing to test-6
searching for changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 5 changes to 2 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
2 files, 4 changesets, 5 total revisions
pushing to test-7
searching for changes
adding changesets
adding manifests
adding file changes
added 5 changesets with 6 changes to 3 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 5 changesets, 6 total revisions
pushing to test-8
searching for changes
adding changesets
adding manifests
adding file changes
added 5 changesets with 5 changes to 2 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
2 files, 5 changesets, 5 total revisions
pulling from ../test-7
searching for changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 2 changes to 3 files (+1 heads)
(run 'hg update' to get a working copy)
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
4 files, 9 changesets, 7 total revisions